[rka55]

I purchased a shed last week that was wired. It has a 100 amp sub panel installed with two breakers. One 15 AMP for the lights and one 20 AMP for the outlets.

My question is the neutral buss bar in the shed panel has neutral and ground wires. I thought in a sub panel situation in a detached build you should have both a neutral and ground buss bars?

 

[psgama]

That's not correct. There should be a bonding bar installed in the panel. The only place neutral should be terminated to ground is in your service disconnect back at your main.

 

[brric]

That panel in the photo has no feeders connected to it. There should also be a main disconnect and grounding electrode system at the shed. As mentioned, isolated neutrals and grounds.

 

[joed]

Yes the neutral and grounds need to be separate in a sub. At one time it was allowed to bond them in a detached structure but that rule has changed.

 

[Arrow3030]

It's not surprising for a used shed. The rule was changed recently. Adding a ground bar and keeping the neutrals and grounds separate is a low cost. The increase in cost is in the feeder circuit to the shed.