Residential Generator

[shortcircuit2]

I posted this in another thread...but I will add it to this one also...

OK, I just read through this thread and the 702.11 (now 702.12 of the 2011 NEC) requirement is that the disconnect SHALL be "suitable for use as service equipment" under 225.36

So, if the disconnect is suitable for use as service equipment, then it would have provisions for a bonding connection from the neutral bar to the disconnect enclosure.

Is this bond required to be made in this disconnect?

 

[kwired]

I posted this in another thread...but I will add it to this one also...

OK, I just read through this thread and the 702.11 (now 702.12 of the 2011 NEC) requirement is that the disconnect SHALL be "suitable for use as service equipment" under 225.36

So, if the disconnect is suitable for use as service equipment, then it would have provisions for a bonding connection from the neutral bar to the disconnect enclosure.

Is this bond required to be made in this disconnect?

If it is used as service equipment you have to bond it there. If it is not used as service equipment you almost always do not install the bonding jumper. If it were marked "suitable only for use as service equipment" then the bond will already be made and will not be (easily) removable.

 

[tom baker]

The disconnect on the majority of these units are behind lockable covers which violates the with in sight and accessible rule. Even at that the disconnects on these units do not meet 225.36 "suitable as service equipment".

Electrical equipment rooms and enclosures are often locked and that is considered accessible by the NEC, see 110.26(E).

 

[K8MHZ]

Electrical equipment rooms and enclosures are often locked and that is considered accessible by the NEC, see 110.26(E).

Yep, went through this with a day care center where the inspector required the door to the breaker panel have a lock so the kids couldn't get to the breakers (it was in an area they had access to).

The old accessible vs. readily accessible distinction.

 

[ceb58]

Electrical equipment rooms and enclosures are often locked and that is considered accessible by the NEC, see 110.26(E).

Yes, they are if you follow the last 4 words of 110.26 (E) "accessible to qualified persons" but

702.12 Outdoor Generator Sets.​

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Where an outdoor housedgenerator set is equipped with a readily accessible disconnectingmeans located within sight of the building or structuresupplied, an additional disconnecting means shall not be requiredwhere ungrounded conductors serve or pass throughthe building or structure. The disconnecting means shall meet​

the requirements of 225.36.

Notice the word readily?

Accessible, Readily (Readily Accessible)​

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Capable of beingreached quickly for operation, renewal, or inspectionswithout requiring those to whom ready access is requisiteto climb over or remove obstacles or to resort to portable​

ladders, and so forth.