fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
I'm looking for constructive criticism on the following, and if you think it is merited, support in the form of comments from you on 19-44. Thanks, Jim Williams
4 Comment:
551.4 (D) Motors and Actuators. Electric motors and actuators that have manual controls shall meet the requirements of 110.25.
5 Statement of Problem and Substantiation.
From ROP:
Substantiation:
?.
A disconnect for these motors within sight of the motor or a lockable disconnect is just as important for an RV tip out motor as for any other motor. If a person is underneath an RV working on these tip outs a person inside could engage the tip out and cause a severe injury from the screw jacks. The gear reduction ratio makes these jacks extremely powerful.
Panel Statement:
?.
Regarding the protection of individuals working on slideouts that
could be operated while one is underneath, a provision is provided within
NFPA 1192 that the activation mechanism be a non-latching switch; only a
momentary switch so the slideout cannot be activated, should the operator walk
away while the system was in the functioning mode.
I'm astonished at the suggestion underlined above. The argument immediately falls apart as soon as you realize that it is possible for 2 persons to be present at the same time. That scenerio is the whole reason behind disconnects within sight and lockable disconnects that permeate the NEC.
4 Comment:
551.4 (D) Motors and Actuators. Electric motors and actuators that have manual controls shall meet the requirements of 110.25.
5 Statement of Problem and Substantiation.
From ROP:
Substantiation:
?.
A disconnect for these motors within sight of the motor or a lockable disconnect is just as important for an RV tip out motor as for any other motor. If a person is underneath an RV working on these tip outs a person inside could engage the tip out and cause a severe injury from the screw jacks. The gear reduction ratio makes these jacks extremely powerful.
Panel Statement:
?.
Regarding the protection of individuals working on slideouts that
could be operated while one is underneath, a provision is provided within
NFPA 1192 that the activation mechanism be a non-latching switch; only a
momentary switch so the slideout cannot be activated, should the operator walk
away while the system was in the functioning mode.
I'm astonished at the suggestion underlined above. The argument immediately falls apart as soon as you realize that it is possible for 2 persons to be present at the same time. That scenerio is the whole reason behind disconnects within sight and lockable disconnects that permeate the NEC.