THE ASCO SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCHES COMBINE A SERVICE ENTRANCE DISCONNECT, AND A AUTOMATIC TRANSFER SWITCH INTO A EASY TO INSTALL SPACE SAVING PACKAGE.

 

THEY ARE AVAILABLE IN THE SERIES 185 FOR HOME AND SMALL BUSINESS USE,

 AND THE SERIES 300G FOR INDUSTRIAL AND COMMERCIAL APPLICATIONS

 

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PLEASE CALL OR EMAIL

(866) 321-6855  sales@biglakesupply.com

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HOW THE NEC APPLIES TO SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCHES

The National Electrical Code defines disconnect, and over current requirements of a utility power connection under article 230.

Applicable sections are:

230.70 Means shall be provided to disconnect all conductors in a building or structure from
the service entrance conductors.
230.70 (1) The service disconnecting means shall be installed at a readily accessible location
either outside of a building or structure or inside nearest the point of entrance of the service
conductors.
230.72 EQUIPMENT CONNECTED TO THE SUPPLY SIDE OF SERVICE DISCONNECT
Only the following equipment shall be permitted to be connected to the supply side of the
service disconnecting means.
230.72 (5) Taps used only to supply load management devices, circuits for standby power
systems, fire pump equipment, fire and sprinkler alarms, if provided with service equipment
and installed in accordance with requirements for service entrance conductors.
230.90 Each ungrounded conductor shall have overcurrent protection.
230.91 The service overcurrent device shall be an integral part of the service disconnecting
means or shall be located immediately adjacent hereto.

 

Article 230 becomes applicable to transfer switches when the planned installation places them on the utility side of an existing service entrance, or when it is beneficial to incorporate the service entrance and the transfer switch in one unit.

A Service Entrance Rated transfer switch is just a normal transfer switch, with a circuit breaker added in series with the utility power input, and a bonding jumper between neutral and ground. All ASCO Service Entrance Rated transfer switches are UL-891 and UL-1008 listed, and meet all national and local codes.

A service entrance rated transfer switch is called for when the installation does not have room for a separate service entrance disconnect. they  generally do not make financial sense for smaller installations because the price premium for a service entrance rated transfer switch is significantly higher than the cost of materials and labor to install a separate service entrance disconnect.

above 400 amps, the price premium of a service entrance rated transfer switch lowers to a point where their use becomes cost justifiable. a notable exception to this is in a retrofit situation where a single phase service is supporting two panels of 200 amps each with integral main breakers. it is significantly more cost effective to use two 200 amp series 185 service entrance rated automatic transfer switches, than a 400 amp switch, and service entrance disconnect.

we can supply any asco series 300g manual or automatic transfer switch in a service entrance rated version. below are a few of the units we can supply. these are units we carry in stock for immediate shipping.

WE CAN SHIP YOUR AUTOMATIC TRANSFER SWITCH TODAY

WE CAN ALSO SHIP YOUR AUTOMATIC TRANSFER SWITCH USING NEXT DAY AIR DELIVERY ANYWHERE IN THE UNITED STATES

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(866)321-6855 WE ARE OPEN
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ASCO SERIES 185
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 200A, 2 POLE, 120/240V
NEMA 1 ENCLOSURE
P/N 1AUSA2200F4C

$1515 FREE SHIPPING

ASCO SERIES 185
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 200A, 2 POLE, 120/240V
NEMA 3R ENCLOSURE
P/N 1AUSA2200F4M

$1579 FREE SHIPPING

ASCO SERIES 300G
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 600A, 3 POLE, 120/208V
NEMA 3R ENCLOSURE, 11BE EXERCISER, 44G STRIP HEATER
P/N 3AUSA3600CGXM11BE44G

$8850 FREE SHIPPING

ASCO SERIES 300G
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 600A, 3 POLE, 277/480V
NEMA 3R ENCLOSURE, 11BE EXERCISER, 44G STRIP HEATER
P/N 3AUSA3600NGXM11BE44G

$8850 FREE SHIPPING

ASCO SERIES 300G
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 800A, 3 POLE, 120/208V
NEMA 3R ENCLOSURE, 11BE EXERCISER, 44G STRIP HEATER
P/N 3AUSA3800CGXM11BE44G

$10,450 FREE SHIPPING

ASCO SERIES 300G
SERVICE ENTRANCE RATED AUTOMATIC TRANSFER
SWITCH 800A, 3 POLE, 277/480V
NEMA 3R ENCLOSURE, 11BE EXERCISER, 44G STRIP HEATER
P/N 3AUSA3800NGXM11BE44G

$10,450 FREE SHIPPING

DON'T SEE THE TAUTOMATIC RANSFER SWITCH YOU ARE LOOKING FOR?

WE ONLY PUT THE MOST POPULAR MODELS ON THE WEB SITE.
GIVE US A CALL, OR SEND AN EMAIL. WE CAN SUPPLY ANY ASCO TRANSFER SWITCH, AND WE PROBABLY HAVE THE ONE YOU NEED IN STOCK.
WE NORMALLY HAVE OVER 50 TRANSFER SWITCHES IN STOCK FOR IMMEDIATE SHIPPING.

PLEASE CALL  (866)321-6855  WE ARE OPEN
MONDAY-FRIDAY 8-5 CENTRAL TIME

THE ASCO SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCHES, COMBINE A SERVICE ENTRANCE DISCONNECT, AND A AUTOMATIC TRANSFER SWITCH INTO A EASY TO INSTALL SPACE SAVING PACKAGE.

 

THEY ARE AVAILABLE IN THE SERIES 185 FOR HOME AND SMALL BUSINESS USE,

 AND THE SERIES 300G FOR INDUSTRIAL AND COMMERCIAL APPLICATIONS

THE ASCO SERVICE ENTRANCE RATED AUTOMATIC TRANSFER SWITCHES, COMBINE A SERVICE ENTRANCE DISCONNECT, AND A AUTOMATIC TRANSFER SWITCH INTO A EASY TO INSTALL SPACE SAVING PACKAGE.

 

THEY ARE AVAILABLE IN THE SERIES 185 FOR HOME AND SMALL BUSINESS USE,

 AND THE SERIES 300G FOR INDUSTRIAL AND COMMERCIAL APPLICATIONS