Part
Chapter
Section
4
8
3
Vessel Systems and Machinery
Electrical Systems
Electrical Equipment
4-8-3
TABLE 2
Minimum Degree of Protection (2014)
(For high voltage equipment, see 4-8-5/Table 1)
Switchboards, Distribution Boards, Motor Control Centers
and Controllers
Generators
Example
Condition
of
of
Location
Location
Motors
Transformers, Converters
Lighting Fixtures
Heating Appliances
Accessories (2)
Dry accommodation space
Danger of touching live
parts only
IP20
-
IP20
IP20 IP20 IP20
IP20
IP20
-
IP20
IP20 IP20 IP20
IP20
Danger of dripping liquid
and/or moderate mechanical
damage
IP22
-
IP22
IP22 IP22 IP22
IP22
IP22 IP22 IP22
IP22 IP22 IP22
IP44
Steering gear rooms
IP22 IP22 IP22
IP22 IP22 IP22
IP44
Refrigerating machinery rooms
IP22
IP22
IP22 IP22 IP22
IP44
Emergency machinery rooms
IP22 IP22 IP22
IP22 IP22 IP22
IP44
General store rooms
IP22
-
IP22
IP22 IP22 IP22
IP22
Pantries
IP22
-
IP22
IP22 IP22 IP22
IP44
Provision rooms
IP22
-
IP22
IP22 IP22 IP22
IP22
-
-
-
-
IP34 IP44
-
-
IP44
-
IP34 IP44 IP55 (3)
IP44
-
IP44
-
IP34 IP44 IP55 (3)
IP44
-
IP44
-
-
IP44
IP44
-
IP44
IP44 IP34 IP44 IP44 (6)
IP55
-
IP55
IP55 IP55 IP55
-
-
-
-
IP55
IP56
-
IP56
-
IP55 IP56
IP56
-
-
-
-
IPX8
IPX8
Dry control rooms
(4)
Control rooms
Machinery spaces above floor plates
(5)
Bathrooms and Showers
Machinery spaces below floor plates
Closed fuel oil or lubricating oil
separator rooms
Ballast pump rooms
Refrigerated rooms
Increased danger of liquid
and/or mechanical damage
Increased danger of liquid
and mechanical damage
Galleys and Laundries
Shaft or pipe tunnels in double bottom
Open decks
Danger of liquid spray
presence of cargo dust,
serious mechanical damage,
and/or aggressive fumes
Exposure to heavy seas
Bilge wells
Exposure to submersion
Holds for general cargo
-
IP44 IP34 IP44
-
IP34 IP44
-
-
IP55
IP55
IP55
IP56
IP55
Notes:
1
Empty spaces shown with “-” indicate installation of electrical equipment is not recommended.
2
“Accessories” include switches, detectors, junction boxes, etc.
3
Socket outlets are not to be installed in machinery spaces below the floor plate, enclosed fuel and lubricating oil
separator rooms or spaces requiring certified safe equipment.
4
For the purpose of this Table, the wheelhouse may be categorized as a “dry control room” and consequently, the
installation of IP20 equipment would suffice therein provided that: (a) the equipment is located as to preclude
being exposed to steam, or dripping/spraying liquids emanating from pipe flanges, valves, ventilation ducts and outlets,
etc., installed in its vicinity, and (b) the equipment is placed to preclude the possibility of being exposed to sea or rain.
5
(2006) See 4-8-3/1.11.2 where the equipment is located within areas protected by local fixed pressure waterspraying or water-mist fire extinguishing system and its adjacent areas.
6
(2014) Socket outlets in galleys and laundries are to maintain their protection against splashed water when not in use.
ABS RULES FOR BUILDING AND CLASSING STEEL VESSELS . 2016
717