Bjenks
Senior Member
- Location
- East Coast of FL
I was looking at Mike Holt?s 2008 Understanding the NEC under his example of a load calculation in Figure 555-5 and he mentions that 20 of the receptacles feeding the boats are 20A/125V. I am assuming it is shore power as he is using it in the adjustment factor.
Then in 555.19 (A)(4) it says Shore power for boats shall be provided by a single receptacle rated not less than 30A. Again he shows all the receptacles and how they must by locking or pin and sleeve.
Finally a look at 555.19(B) identifies all other than shore power has to be GFCI for personal use as 15/20A 125V. (2) Markings: says that you must even put a label on the receptacle saying it is not to be used as shore power.
So my interpretation is that a cord going to a boat for shore power must be at least 30A and lockable of some type. If you want to have local power at the dock to work on something or run additional equipment such as a lift you can supply the additional 15/20A GFCI outlet. It is never to be used as shore power and a label should be added to the outlet to confirm that.
If I interpreted this correctly then Mike's load calculations should not have a 20A load as part of his calculations it should be at least 30A.
Am I right on this? Or did I miss understand the code or its intention?
Then in 555.19 (A)(4) it says Shore power for boats shall be provided by a single receptacle rated not less than 30A. Again he shows all the receptacles and how they must by locking or pin and sleeve.
Finally a look at 555.19(B) identifies all other than shore power has to be GFCI for personal use as 15/20A 125V. (2) Markings: says that you must even put a label on the receptacle saying it is not to be used as shore power.
So my interpretation is that a cord going to a boat for shore power must be at least 30A and lockable of some type. If you want to have local power at the dock to work on something or run additional equipment such as a lift you can supply the additional 15/20A GFCI outlet. It is never to be used as shore power and a label should be added to the outlet to confirm that.
If I interpreted this correctly then Mike's load calculations should not have a 20A load as part of his calculations it should be at least 30A.
Am I right on this? Or did I miss understand the code or its intention?